At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
4.5 pounds of sunlight strike the Earth each day.
27
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
Scientists in Germany have developed a candy that doesn't cause cavities.
11
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
One ragweed plant can release as many as one billion grains of pollen!
51